US4107464A
(en )
1978-08-15
Alarm communications system
JP6605875B2
(ja )
2019-11-13
感震遮断システム
US3865985A
(en )
1975-02-11
Telephone control system having wakeup, message waiting, special message and fire alert modes
GB901504A
(en )
1962-07-18
Improvements in or relating to alarm systems
BE408706A
(enEXAMPLES )
EP0099807A1
(fr )
1984-02-01
Circuit de commande de l'arrêt d'appareils, notamment de moyens d'éclairage
US4479170A
(en )
1984-10-23
Guiding light system
NO130896B
(enEXAMPLES )
1974-11-25
US2363145A
(en )
1944-11-21
Telephone electrical circuit control system
US2496642A
(en )
1950-02-07
Subscriber telephone set double connection signal
GB426599A
(en )
1935-04-05
Improvements in and relating to apparatus for the detection of suspended matter in fluids
US2028626A
(en )
1936-01-21
Remote control device
US3476943A
(en )
1969-11-04
Photoelectric ambient light sign control apparatus
FR2526564A1
(fr )
1983-11-10
Dispositif de surveillance
US1139127A
(en )
1915-05-11
Composite electric system.
US1799742A
(en )
1931-04-07
Dial-lighting attachment for telephones
US2076176A
(en )
1937-04-06
Automatic intercommunicating system
US1885162A
(en )
1932-11-01
Advertising system
GB475865A
(en )
1937-11-26
Improvements relating to warning systems for dwelling houses, hotels, and similar establishments
BE491874A
(enEXAMPLES )
SU29194A1
(ru )
1933-02-28
Устройство дл приведени в действие реле, включенного в телеграфную цепь при схеме посто нного тока
US1165853A
(en )
1915-12-28
Signal-lamp control for vehicles.
BE409194A
(enEXAMPLES )
JPS6070850A
(ja )
1985-04-22
電話機の照明装置
FR2468170A1
(fr )
1981-04-30
Dispositif d'information par affichage numerique ou alphanumerique a distance